Wanted to *bump this one. Got my V recently, went to initial boot and ended up with sometimes constant search but mostly solid red (bad upgrade files). I reformatted supplied card and reloaded files twice with no luck. I tried one of my SDs and it worked first time.
Thoughts: I use microSD as pendrives but, like some thumb drives, I have noticed not all can be booted from. Could this be the case with the latest supply of microSDs?